Induction-coil



(No Model) I 2 Sheets-Sheet 1. A. M. A. BEALE.

INDUCTION 0011 No. 342,947. Patented June 1, 1886.

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WITNESSES: lNVE/VTOR N. PETERS. Photo-LBW, Wahnflm D. c.

UNITED STATES PATENT OFFICE.

ALFRED MEYER AL EET BEALE, OF NEW YORK, N. Y., ASSIGNOR OF Two I THIRDSTO LEMUEL B. CLARK, F sAME FLAoE, AND EDWIN E. wre- GIN, OF BOSTON,MAssAcIIUsETTs.

INDUCTION-COIL.

SPECIFICATION forming part of Letters Patent No. 342,947, dated June1,1886.

Application filed January 12, 1886. Serial No.189,333. (No model.)

Initter. Here F is the core and G the pri- 4o mary coil,wound in theusual way. The secondary wire is wound in multiple are, as illustratedin Fig. 2. The line connects with the terminals of the helicesdesignated by the numbers 2 at 6 S 10. The other terminals of Myinvention relates to a coil for receiving induction from or causinginduction in a neighboring conductor, and in the method of consaid coilsare attached to the conducting-wire -D, which at its opposite extremityconnects with the terminals of the helices 1 8 5 7 9,

i Similar letters of reference indicate like o structing andconstruction of the same, as

hereinafter more particularly set forth.

Figure l is a diagram illustrating theconstructionofmyimprovedinduction-coil. Fig. 2 is a diagram showing thedisposition of the helices as arranged in Fig. l in the coil. Fig.

3 is a diagram showing an induction-coil constructed in accordance withFigs. 1 and 2.

which alternate with the helices 2 4t 6 8 10. The opposite terminals ofthe helices 2 4 6 8 5o 10 communicate with ground.

I do not limit myself to the application of my invention toinduction-coils solely, because it may well be adapted to thewinding ofarmatures of electro-magnets. Neither do I limit myself to aninduction-coil having a secondary helix constructed as hereinbefore setforth, because I may so construct the primary helix, winding thesecondary helix in the usual manner, or I may arrange both secondary andprimary helices according to my invention.

I claim A compound coil for inducing a current in or receiving a currentby induction from a neighboring conductor, containing a set of helicesarranged in in utiple arc in a main c011 ductor, and a second set ofhelices similarly arranged in the same conductor, each helix of one setalternating with a helix of the other set, all of said helices beingwound in the same direction and from the same end of the coil,substantially as described.

ALFRED MEYER ALBERT BEALE.

parts.

I may employ several continuous conductors, A, and I may arrange thehelices B and O in multiple arc in said conductor.

To illustrate, Fig. 1 represents the conductor with a set of helices, BB B in multiple arc, 25 and a second set of'helices, O 0'0 also inmultiple arc, the two sets being joined by the part D. I arrange thesehelices to form the coilin which, for example, a current is tobeinduced, as represented in Fig. 2. Here the helices B 30 B 3 alternatewith the helices O O G. The connecting-wire D is outside of the coil,and the current passes through in the direction of the arrows. This isobviously a coil of low re sistance, and is therefore especially suitedto 5 all cases where a low-resistance coil is advantageous.

In Fig. 3 I represent my invention embodied in an induction-coil such asis used, for example, in connection with a telephonetrans Xl itnesscszJOHN BEIGE, PARK BENJAMIN.

